New Exploration Targets-Dandaragan Trough Fertiliser Project
Released
Released
Announcement PDF
ASX Announcement
28th September 2017
_____________________________________________________________________________________
COMPANY DETAILS
NEW EXPLORATION TARGETS FOR DANDARAGAN TROUGH FERTILISER
PROJECT
ABN: 62 147 346 334
PRINCIPAL
REGISTERED OFFICE
Parkway Minerals Nl
Level 1
675 Murray Street
West Perth WA 6005
POSTAL ADDRESS
PO Box 1088
West Perth WA 6872
W www.parkwayminerals.com.au
E info@parkwayminerals.com.au
P +61 8 9479 5386
F +61 8 9475 0847
ASX CODE
PWN
FRANKFURT CODE
A1JH27
OTC PINK
PWNNY
CORPORATE
INFORMATION
28 September 2017
444M Ordinary shares
123M Partly paid shares
17M Listed Options
5M Unlisted options
BOARD OF DIRECTORS
Adrian Griffin
(Non-Executive Chairman)
Patrick McManus
(Managing Director)
Chew Wai Chuen
(Non-Executive Director)
Natalia Streltsova
(Non-Executive Director)
HIGHLIGHTS:
Exploration Targets have been estimated for four advanced prospects
within the southern portion of the Dandaragan Trough Fertiliser
Project.
The targets complement the recently announced revised Resource and
Exploration Target for the Dinner Hill Deposit.
Provides the company with a clear focus for enhancing the resource
base for the project going forward and maximizing value for
shareholders.
Parkway Minerals NL (“PWN”, “Parkway” or “the Company”) is pleased to
announce new Exploration Targets in the Dandaragan Trough. The Dandaragan
Trough Fertiliser Project covers an area of 1,050 square kilometres in the Midwest
wheat belt region of Western Australia, some 175 km by road north of Perth.
Development is focused on the Dinner Hill Deposit in the north western corner of
the project where the company has established JORC 2012 resources (refer ASX
announcement dated 26 September 2017) for both Phosphate and Potash
mineralization (Figure 1). In addition the company has an extensive tenement
holding in the Dandaragan Trough covering prospective greensand sequences
where wide spaced exploration drilling by the company and other explorers has
defined potash and phosphate mineralisation.
Recent geological modelling of wide spaced exploration drilling undertaken by
the company and earlier explorers by the Company’s resource consultants
Continental Resource Management (“CRM”) has allowed exploration targets for
both Potash and Phosphate to be estimated on four prospects within the
southern portion of the Project area.
Parkway Minerals MD, Patrick McManus stated “These additional Exploration
Targets reinforces our belief that the Dandaragan Trough has the potential to be
a multi-decade supplier of phosphate and potash fertilisers to the regional
agricultural sector, which is currently dependent on imports to meet the growing
demand. The location of the Dinner Hill Project and the Exploration Targets is
shown in Figure 2.”
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Potash West NL – Exploration Target update
September 2017
Figure 1 Location Plan – Dangaragan Trough Fertiliser Project
The project tenements cover two virtually horizontal greensand formations within the Cretaceous Coolyena
Group: the Poison Hill Greensand and the Molecap Greensand. Over most of the area of the project they
are separated by the Gingin Chalk and in places are underlain by a thin pebble horizon containing
phosphatic nodules. An average thickness of about 11m of surficial, mostly sandy, cover overlies the
greensand units. The greensands and the chalk contain significant amounts of phosphate as grains and
nodules of fluorapatite. They also contain significant potash within the mineral glauconite.
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September 2017
Figure 2 Dangaragan Trough Mineralisation Location
EXPLORATION TARGET ESTIMATION
The methodology used in the estimation of the exploration target for each of the prospects was similar.
Separate estimates for Potash and Phosphate were completed.
The estimates were based on air-core drilling undertaken by Parkway Minerals between 2011 and 2016 and
by other parties. Relevant holes are listed in Appendix 2. A plan showing the exploration target areas and
drill-hole locations is provided as Figure 3.
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Potash West NL – Exploration Target update
September 2017
The criteria used to select suitable material was based on results of metallurgical testwork undertaken on
the Dinner Hill Deposit for the different ore types. For the Phosphate Exploration Target the criteria was,
P2O5 content >1%
CaO: P2O5 ratio of >1 and < 3.9 and
Fe2O3: K2O ratio of <4
and for the Potash Exploration Target the criteria was,
K2O >2%
Fe2O3: K2O ratio of <10
The estimation procedure was carried out using Micromine software. Separate wireframes for Potash and
Phosphate mineralisation were created enclosing mineralisation within holes that fitted the above criteria.
The boundaries of the wireframes were constrained by topography and weathering. The grade of each body
was calculated by applying the average grade of all intersections within each wire frame.
The location of the Exploration Target areas is shown in Figure 3 and the target sizes and grades are
summarised in Table 1
Table 1 Dandaragan Trough Fertiliser Project Exploration Targets
Project Area
Badgingarra Road
Dambadgee West
Dambadgee
Attunga
Totals
Phosphate
Tonnage (Mt)
60 to 100
300 to 350
200 to 250
30 to 45
590 to 745
Phosphate
Grade P2O5
2 to 3
1.5 to 2
1.5 to 2.5
1.5 to 2
1.5 to 2.5
Potash
Tonnage (Mt)
600 to 900
2000 to 2750
1200 to 1500
750 to 1000
4550 to 6150
Potash
Grade K2O%
4 to 5
3 to 4
3 to 3.5
3.5 to 4
3.2 to 4
The Phosphate Exploration Targets total between 0.6 and 0.75 Billion tonnes at an average grade of
between 1.5% and 2.5% P2O5. The Potash Exploration Targets total between 4.5 and 6 Billion tonnes at
an average grade of between 3.2% and 4% K2O. The potential quantities and grades of the targets are
conceptual in nature, as there has been insufficient exploration to estimate Mineral Resources over their
areas and as it is uncertain if further exploration will result in the estimation of one or more Mineral
Resources.
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Potash West NL – Exploration Target update
September 2017
Figure 3 Dandaragan Trough Fertiliser Project Exploration Targets
COMPETENT PERSON’S STATEMENT
The information in this report that relates to the estimation of the Mineral Resources and Exploration
Targets is based on and fairly represents information and supporting documentation prepared by J.J.G.
Doepel, who is a member of the Australasian Institute of Mining and Metallurgy. Mr. Doepel, Principal
Geologist of the independent consultancy Continental Resource Management Pty Ltd, has sufficient
experience relevant to the style of mineralisation and type of deposit under consideration. He is qualified
as a Competent Person as defined in the 2012 edition of the “Australasian Code for Reporting of Exploration
Results, Mineral Resources and Ore Reserves”. This report is issued with Mr. Doepel’s consent as to the
form and context in which the Mineral Resource and Exploration Target appears.
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Potash West NL – Exploration Target update
September 2017
For further information contact:
Parkway Minerals NL:
Patrick McManus
Managing Director
Tel: +61 (0)8 9479 5386
info@parkwayminerals.com.au
Web:
www.parkwayminerals.com.au
About Parkway Minerals NL
Parkway Minerals (ASX: PWN) is a company focused on developing fertiliser feedstock projects. The
Company holds 1,900km2 of exploration licenses and applications over Lake Barlee, where it is exploring a
sulphate of potash project from the brines in the lake, north of Southern Cross in Western Australia.
The Company has a major land holding over one of the world’s largest known glauconite deposits, with
exploration licenses and applications covering an area of over 1,050km2 in the greensand deposits of the
Dandaragan Trough, in Western Australia’s Perth Basin. The area is prospective for both phosphate and
potash. Previous exploration indicates glauconite sediments are widespread for more than 150km along
strike and 30km in width. A pre-feasibility study is in progress for stage 1, production of phosphate
fertilisers. The project is well situated in relation to infrastructure, with close access to rail, power and gas.
A successful commercial outcome will allow the Company to become a major contributor to the potash and
phosphate markets at a time of heightened regional demand.
The Company owns 19.25M shares (26%) of Davenport Resources, which owns a potash exploration project
in the South Harz region of Thuringia, in Central Germany. The region has been a potash producing area for
over 100 years.
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Potash West NL – Exploration Target update
September 2017
APPENDIX 1 - JORC CODE, 2012 EDITION – TABLE 1
Section 1 Sampling Techniques and Data
Criteria
Commentary
Sampling
techniques
Air-core drilling was used to obtain 1m or 2m samples from target
horizons;
3kg sub-samples were split by rotary splitter or by scoop sampling.
Sub-sample size 3 to 4kg.
Drilling
techniques
Vertical NQ Air-core
Drill
sample Clay content of moist greensands ensured total recovery and
retention of all size fractions;
recovery
Holes were conditioned at completion and cyclone opened and
cleaned before next hole drilled
Logging
All intervals geologically logged directly into a field computer using a
database designed to capture relevant data including, oxidation,
grainsize, rounding, sorting, mineralisation, hardness, colour and
stratigraphic unit. All logging sample layouts are photographed and
chip trays stored for future reference.
Duplicate field splits at a 1:18 ratio returned R 2 correlation coefficient
Sub-sampling
of 0.96 for P2O5 for 2012 drilling and 0.98 for more recent drilling,
techniques and
indicating robustness of sampling process;
sample
Duplicate field splits at a 1:18 ratio returned R 2 correlation coefficient
preparation
of 0.99 for K2O for 2012 drilling and 0.98 for more recent drilling,
again indicating robustness of sampling process;
Sample preparation by Genalysis Laboratory Services Pty Ltd via
drying and total pulverisation
Quality of assay Analysis by Genalysis Laboratory Services Pty Ltd by Phosphate
Major Element Suite FB1 method (XRF after lithium borate fusion);
data
and
laboratory tests Three alternate phosphate standards were submitted with samples
at a 1:18 ratio. For the P2O5 analyses the respective means of the
analytical results of the standards were 19.3%, 9.74%, and 4.94% as
against the nominal standard means of 19.3%, 9.72%, and 4.94%.
Three alternate phosphate standards were submitted with samples
at a 1:18 ratio. For the K2O analyses the respective means of the
analytical results of the standards were 1.55%, 3.02%, and 3.76% as
against the nominal standard means of 1.55%, 3.02%, and 3.75%.
Verification of Sampling and logging verified by site visits by Exploration Manager
and Independent Consultant. Logging checked against major
sampling
and
element assays and sample photography;
assaying
Assay entry by digital capture of laboratory files, with later verification
of significant intervals against original files.
Location of data Holes located by GPS;
points
Grid MGA_GDA94, Zone 50;
Elevation data is based on a topographic contour set produced from
SRTM imagery at 5m vertical resolution.
Data
spacing 1m or 2m samples collected and analysed throughout mineralized
horizons;
and distribution
Geological continuity across mineralisation.
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Potash West NL – Exploration Target update
Criteria
September 2017
Commentary
Orientation
of Vertical drilling through virtually horizontal stratigraphy resulted in
intersected thicknesses equivalent to true thickness.
data in relation
to
geological
structure
Sample security
Audits
reviews
Samples transported from site to laboratory by Potash West staff.
or Sample techniques, logs, and data reviewed positively by
independent consultant geologist.
Section 2 Reporting of Exploration Results
Criteria
Commentary
The Badgingarra Road and the Dambadgee West Exploration
Mineral
Targets are within the granted Exploration Licence E70/4609. It is
tenement
and
registered in the name of Parkway Minerals NL. It was granted on
land
tenure
31/03/2015 for a period of five years.;
status
The Dambadgee and the Attunga Exploration Targets are within the
granted Exploration Licence E70/4137 (Figure 3), registered in the
name of Parkway Minerals NL. It was granted on 22/05/2012 for a
period of five years and has been extended for a further five years
until 21/05/2022.
Air-core drilling has been carried out within the area by Dempsey
Exploration
Minerals Ltd, by Agerton Phosphate Pty Ltd, and by Australian
done by other
Fertilizers Ltd;
parties
Results from these programmes have been incorporated into
Parkway’s database and into the Exploration Target estimations.
Geology
The phosphate is present as fluorapatite nodules and grains
concentrated within particular horizons of horizontal greensand and
chalk formations;
The potash is present as the mineral glauconite, which is a major
constituent of the Molecap and Poison Hill Greensands and a minor
constituent of the Gingin Chalk.
Drill
hole See Appendix 2.
Information
Data
aggregation
methods
Relationship
between
mineralisation
widths
and
intercept
lengths
Diagrams
No data aggregation of analyses used;
No metal equivalent values used.
Balanced
reporting
Grades are consistent across deposit;
Intersection grades show consistent hole to hole grades.
Other
substantive
exploration data
Further work
There is no unreported substantive exploration data.
Vertical drilling through virtually horizontal stratigraphy resulted in
intersected thicknesses equivalent to true thickness.
Diagrams are included in the report.
Further bulk density work is expected to be carried out.
8
Potash West NL – Exploration Target update
Criteria
September 2017
Commentary
Drill programmes are expected to be carried out in order to
substantiate continuity of mineralisation.
Section 3 Estimation and Reporting of Mineral Resources
Criteria
Commentary
Database
integrity
Assay data copied digitally from laboratory files; significant
intersections checked; Micromine drill-hole verification performed.
Site visits
Competent person visited project area during drilling programmes in
June and August 2012, April 2013, and in March 2015.
Geological
interpretation
High degree of confidence in geological interpretation, as
stratigraphy is both visually and chemically distinct and continuous.
Dimensions
The Badgingarra Rd Phosphate Exploration Target has a north-south
length of 3km and an average east-west width of 2.5km. The depth
to mineralisation is about 24m.
The mineralisation is beneath a north-south trending ridge and
is constrained by weathering and erosion to the west, north,
and east; and by weathered phosphate mineralisation to the
south
The mineralisation is within two 2m thick horizons within the Molecap
Greensand.
The Badgingarra Rd Potash Exploration Target has a north-south
length of 11km and an average east-west width of 3km. The depth
to mineralisation averages 18m.
The potash mineralisation is beneath a north-south trending
ridge and is constrained by weathering and erosion.
The potash mineralisation is within the Molecap Greensand and has
an average thickness of 14m
The Dambadgee Exploration Targets have a north-south length of
7km and an average east-west width of 2.5km.
The mineralisation is beneath an east-west trending ridge and
is constrained by weathering and erosion to the north and
south; and by the Dambadgee Fault to the east. It continues
into the Dambadgee West target area to the west.
The depth to the phosphate mineralisation is about 45m. It is within
two separate horizons: the upper, at the base of the Poison Hill
Greensand, averages 2.5m in thickness; and the lower, within the
Molecap Greensand, averages 7m in thickness;
The potash mineralisation has an average thickness of 40m and is
about 45m below surface
The Dambadgee West Exploration Targets have an east-west length
of 7km and an average north-south width of 2.5km.
The mineralisation is beneath an east-west trending ridge and
is constrained by weathering and erosion to the north, west
and south. It continues into the Dambadgee target area to the
east.
The average depth to the phosphate mineralisation is about 40m. It
is within single horizon at the base of the Poison Hill Greensand. It
averages 11m in thickness.;
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Potash West NL – Exploration Target update
Criteria
September 2017
Commentary
The potash mineralisation has an average thickness of 80m and is
about 25m below surface;
The Attunga Phosphate Exploration Target is restricted to circular
high ground with a radius of about 2km.
The phosphate mineralisation is within the Molecap Greensand. It
averages 7m in thickness and is at an average depth of about 30m.;
The potash mineralisation has an average thickness of 19m from
about 30m below surface.
Estimation
modelling
techniques
and
Estimation of Exploration Target P2O5 grade by weighted average of
grades above 1% P2O5;
Estimation of Exploration Target K2O grade by weighted average of
grades above 2% K2O;
Moisture
Tonnages estimated on dry basis.
Cut-off
parameters
Exploration Target Potash mineralisation has Fe2O3:K2O ratio <10;
Exploration Target Phosphate mineralisation has Fe2O3:K2O ratio <4
and CaO:P2O5 ratio >1 and <3.9.
Mining factors or Not applicable
assumptions
Metallurgical
factors
assumptions
or
The processing route for production of single superphosphate is
conventional; consisting of wet scrubbing, screening, desliming,
magnetic separation, grinding, flotation, and reaction with sulphuric
acid to produce single superphosphate;
Glauconite to be retained during process by wet high intensity
magnetic separation (WHIMS) and stockpiled for later production of
potash products within K-Max plant.
Not applicable.
Environmental
factors
or
assumptions
Bulk density
Density determinations carried out on 93 PQ core samples by
Metallurgy Pty Ltd and reported as dry densities;
Poison Hill Greensand: 12 samples, median SG 1.45, mean SG 1.55,
SG of 1.50 used;
Gingin Chalk: 7 samples, median SG 1.53, mean SG 1.50, SG of
1.50 used;
Molecap Greensand: 68 samples, median SG 1.64, mean SG 1.64,
SG of 1.63 used;
Classification
All mineralisation is classified as an Exploration Target, as it is the
Competent Person’s view that the drill-holes from which the target is
estimated are not spaced closely enough to imply both geological
and grade continuity throughout the area.
Audits or reviews
Exploration Target estimation peer reviewed by Parkway Exploration
Manager
Discussion
of The relative accuracy of the Exploration Target estimate is reflected
in the reporting of the Exploration Target as per the guidelines of
relative accuracy
the 2012 JORC Code.
/ confidence
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Potash West NL – Exploration Target update
September 2017
APPENDIX 2 –DRILL-HOLE DETAILS
The tables below detail the air-core drill-holes used for the exploration target estimates.
Table 2 Badgingarra Rd Drill-hole Locations (all holes vertical)
HOLE
EASTING NORTHING RL
PWAC496
PWAC497
PWAC498
PWAC499
PWAC500
PWAC501
PWAC502
DGAC00007
DGAC00009
369415
371166
371856
370866
369925
369660
369562
370210
369565
6610233
6610251
6610550
6611280
6612743
6613737
6615141
6610239
6614294
DEPTH
(m)
63
54
24
30
18
27
39
68
60
290
289
257
282
285
299
311
302
294
Table 3 Dambadgee West Drill-hole Locations (all holes vertical)
HOLE
EASTING
NORTHING
RL
PWAC133
DGAC00002
DGAC00003
WAD9
WAD13B
WAD59
WAD70
WAD73
WAD74
WAD75
375324
378486
375338
376769
378932
377141
378765
379787
379093
378194
6597689
6599551
6600150
6599701
6599658
6597885
6600761
6600767
6597997
6597984
219
261
257
276
245
242
243
253
247
267
11
DEPTH
(m)
39
90
84
55
77
75
50
62
80
83
Potash West NL – Exploration Target update
September 2017
Table 4 Dambadgee Drill-hole Locations (all holes vertical)
HOLE
EASTING
NORTHING
RL
PWAC297
PWAC298
PWAC299
PWAC300
PWAC301
G1
G4
G5
G6
G7
G8
G9
G10
G11
G12
G14
G15
G16
G17
G18
G19
MA1
MA2
MA3
MA4
MA5
MA6
MA7
WAD10
WAD35B
WAD37
WAD38B
WAD47B
WAD55
WAD57
WAD58
WAD71
WAD72
381986
381989
381983
382002
381991
382018
382379
382000
382445
382834
382241
382846
382816
382398
381983
381992
381607
381207
381960
381629
381595
381672
381964
381937
381960
381627
381594
381084
382161
380543
382056
380742
380661
382762
382155
382198
382155
381262
6598617
6599109
6599477
6599939
6600362
6598325
6598600.
6599107.
6599522
6599543
6599744
6599949
6600329
6600347
6600359
6599538
6598205.
6598178.
6598596
6598601
6599045
6599541
6599961
6602051
6601226
6600397
6599987
6601175
6599366
6599658
6598015
6598003
6596274
6600166
6599013
6597712
6600786
6600786
245
243
247
243
249
253
237
242
231
239
232
250
254
251
249
244
246
237
246
249
245
254
244
241
260
265
256.
250
240
259
236
232
229
254
234
221
262
262
DEPTH
(m)
72
87
108
75
78
66
51
60
48
72
57
63
72
69
60
66
75
50
66
72
66
66
54
51
63
69
63
57
74
87
88
68
57
90
54
60
66
81
Table 5 Attunga Drill-hole Locations (all holes vertical)
HO90LE
EASTING
NORTHING
RL
PWAC292
PWAC293
PWAC294
PWAC295
PWAC296
382068.
382069
382059
382055
382047
6593218
6593561
6594055
6594463
6594880
240
233
239
231
212
12
DEPTH
(m)
99
87
102
60
60
Potash West NL – Exploration Target update
P01
P01A
P01B
P01C
P01D
P01E
P01F
P02
P03
P04
P05
P06
P07
P08
P09
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
WAD40
WAD41
WAD42
WAD44
WAD45
381559
381542
381518
381490
381449
381419
381772
381723
381930
382125
383951
383560
382626
383017
382748
382462
381827
381749
382072
382074
382075
382442
382439
382440
382430
382631
382046
381650
381834
383114
383545
384802
383270
383190
384163
380977
381399
September 2017
6594847
6594678
6594527
6594390
6593979
6593622
6593604
6594854
6594858.
6593563
6592405
6592506
6592626.
6593036
6593144
6593351
6594363
6594036
6594053
6594457
6594832
6594849
6594445
6594061
6593717
6593549
6593216
6593195
6594620
6591627
6591511
6592292
6594712
6593342
6591960
6592648
6594346
13
207.
220
226
226
222
205
222
209
207
236
241
237
240.
241
242
239
238
237
239
231
215
226
233
244
245
234
240
235
226
215
215
240
194
229.
230
239
222
87
88
90
108
99
80
86
87
84
99
105
101
99
99
99
108
60
55
54
55
50
60
60
66
66
66
54
60
51
60
57
66
20
30
90
70
60
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